SU1691497A1 - Tricone boring bit - Google Patents
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- SU1691497A1 SU1691497A1 SU884433084A SU4433084A SU1691497A1 SU 1691497 A1 SU1691497 A1 SU 1691497A1 SU 884433084 A SU884433084 A SU 884433084A SU 4433084 A SU4433084 A SU 4433084A SU 1691497 A1 SU1691497 A1 SU 1691497A1
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Abstract
Изобретение относитс к породоразру- шающему инструменту дл бурени скважин . Цель1- повышение долговечности долота путем равномерного распределени нагрузки на все опоры Буровое трехшарошечное долото содержит лапы с цапфами и смонтированные на них посредством опор шарошки. Шарошки содержат одинаковое количество породоразрушающих венцов 4, 5 и б, удаленных от оси долота на разное рассто ние, и периферийные венцы 7, равноудаленные от оси долота. Длины трех соседних венцов И, h и 1з первой, второй и третьей шарошек св заны с соответствующим рассто нием середины этих венцов от оси долота п, га и гз следующим соотношением Нп {2Г2-1згз; п+Н / 2 га; Г2+12/2 гз При работе долота обеспечиваетс равномерное распределение нагрузки на все опоры за счет разрушени венцами одинаковых по площади кольцевых зон забо . Это способствует повышению долговечности долота . 2 ил.The invention relates to a rock drilling tool for drilling wells. Target 1 - increasing the durability of the bit by evenly distributing the load on all supports. The tricycle drill bit contains legs with trunnions and mounted on them by means of roller cones. The cones contain the same number of rock-breaking rims 4, 5 and b, distant from the axis of the bit at different distances, and peripheral rims 7, equidistant from the axis of the bit. The lengths of the three adjacent crowns And, h, and 1z of the first, second, and third roller cones are related to the corresponding distance of the center of these crowns from the axis of the bits n, ha, and gz by the following ratio Hn {2Г2-1згз; p + N / 2 ha; Г2 + 12/2 Гз When the bit is working, the load on all supports is evenly distributed due to the destruction by crowns of the same area of the annular bottom zones. This contributes to the durability of the bit. 2 Il.
Description
Фп.1Fp.1
Изобретение относитс породоразру- шающему инструменту дл бурени скважин .The invention relates to a rock drilling tool for drilling wells.
Цель изобретени - повышение долговечности долота путем равномерного распределени нагрузки на все опоры.The purpose of the invention is to increase the durability of the bit by uniformly distributing the load on all supports.
На фиг. 1 представлена развертка шарошек долота; на фиг. 2 - схема перекрыти забо породоразрушающими венцами долота .FIG. Figure 1 shows a drill bit reamer; in fig. 2 - scheme of blocking the bottom rock-cutting crowns of the bit.
Буровое трехшарошечное долого содержит лапы с цапфами (не предстэвлень) и смонтированные на них посредством опор самоочищающиес шарошки 1, 2 и 3. Шарошки содержат одинаковое количество по- родоразрушающих венцов 4, 5 и 6, удаленных от оси долота на разное рассто ние , и периферийные венцы 7, равноудаленные от оси долота. Длины грех соседних венцов Н, h и з, принадлежащих соответственно первой, второй и третьего шарошкам, св заны с соответствующими рассто ни ми середин этих венцов от оси долота п, Г2 и гз следующими соотношени ми:The tricone drilling bit contains paws with trunnions (not present) and self-cleaning rollers 1, 2 and 3 mounted on them by means of the supports. The cones contain the same number of porous 4, 5 and 6 rims distant from the bit axis at different distances and peripheral rims 7, equidistant from the axis of the bit. The lengths of the sin of the neighboring ribs H, h, and h, belonging respectively to the first, second, and third roller cones, are related to the corresponding distances of the centers of these rims from the axis of the n, G2, and gz following ratios:
НгНапгНзгз; 11NgNapgNzgz; eleven
1212
П+ Г2; Г2+ -f- ГЗ.P + G2; G2 + -f- GZ.
Буровое трехшарошечное долоте работает следующим образом.Drill tricone bit works as follows.
При вращении под нагрузкой буровоэ долото за отрезок времени углубл етс на величину Ah. При этом каждый венец долота , кроме периферийных, разрушав свою кольцевую зону шириной, равной длине зубьев, т.е. ширине венца.When rotated under load, the drill bit over a period of time deepens by the amount Ah. In addition, each crown bits, except the peripheral, destroying its annular zone with a width equal to the length of the teeth, i.e. the width of the crown.
jrnrl,j, , 2, 3; j-1, 2п. jrnrl, j, 2, 3; j-1, 2n.
Поскольку дл долот типов С, Т и К механизм разрушени забо близок к вд&ь- ливанию, то дисперсность и. -ама считаетс одинаковой дл соседних венцов. Тогда вс работа по разрушению забо определ етс :Since for the bits of types C, T, and K, the mechanism of bottomhole destruction is close to vd & so, the dispersion and. - and it is considered the same for neighboring crowns. Then the whole work on the destruction of the slab is determined by:
Нагрузка зубцов PIJ шарошки в каждый момент времени зависит от условий контактировани зубьев оставшихс венцов и венцов двух других шарошек. Эта нагрузкаThe load of PIJ teeth of the roller cutter at each moment of time depends on the contact conditions of the teeth of the remaining rims and the rims of the other two cones. This load
имеет импульсный характер, сильно колеблетс по величине и имеет веро тностное распределение. Поэтому нагрузка венца за врем At оцениваетс средневзвешенной величиной:has a pulsed character, strongly fluctuates in magnitude and has a probability distribution. Therefore, the crown load over the time At is estimated by the weighted average:
Рк д tKRk d tK
Pij Pij
tt
: 2 ,: 2,
где Рк - величина к-ro импульса нагрузки, действующей на зубец,where Pk is the value of the k-ro impulse load acting on the tooth,
- число зубцов венца; dtK - длительность импульса. Тогда работа, совершаема lj-м венцом шарошки при разрушении своей кольцевой зоны на глубину Ah, определ етс : - the number of teeth of the crown; dtK is the pulse duration. Then the work done by the ljth crown of the cone at the destruction of its annular zone to a depth of Ah is determined:
AAij-UPij-Ah,AAij-UPij-Ah,
где U - коэффициент пропорциональности.where U is the proportionality coefficient.
Следовательно, 2л:. nj-hj. Средневзвешенна нагрузка на каждую шарошку равна:Therefore, 2n :. nj-hj. The weighted average load on each roller cone is equal to:
Рг Е PiJ ,2,3;j-1,2п.Pr E PiJ, 2,3; j-1,2p.
1 ; Лone ; L
Поскольку периферийна кольцева дол разрушаетс одновременно трем венцами шириной in каждый с одинаковым числом зубцов, то воспринимаема нагрузка Pin6y- дет одинаковой. Следовательно, дл одинаковой нагруженное™ спор шарошек нужно потребовать выполнени Since the peripheral ring portion is destroyed simultaneously by three rims in width each with the same number of teeth, the perceived load of Pin6y is the same. Consequently, for the same loaded spore of cones, it is necessary to require
дd
PIJ- const ,2,3.PIJ-const, 2.3.
ДА-si; §YES-si; §
Sij. Ah |ДЬ -7TR2Sij. Ah | DL-7TR2
где Ј- коэффициент, показывающий затр - ты энергии на разрушение единицы объема породы;where is the coefficient showing the energy cost of destruction of a unit of rock volume;
R - радиус забо .R is the radius of the bottom.
Согласно законам Риттингера и Кирпи- чева работа, выполн ема ij венцем при углублении на Ah определ етс ;According to the laws of Rittinger and Kirpich, the work performed by the ij crown when deepening to Ah is determined;
AAtj 1 Дг|2 Т| И,AAtj 1 Dg | 2T | AND,
Удовлетворить такому условию может долото, в котором три соседних венца, принадлежащие 1, 2-й и 3-й шарошкам и расположенные по мере удалени от центра забо на рассто ние п, Г2, гз, разрушают одинаковые по площади кольцевые зоны, т.е.A chisel can satisfy this condition, in which three adjacent crowns belonging to the 1st, 2nd and 3rd cones and located as they are removed from the center of the face for a distance n, G2, hz, destroy annular zones of equal area, i.e. .
Sfj S2j S3Hlj rij J2K2j i3ir3jSfj S2j S3Hlj rij J2K2j i3ir3j
при этом r2j; -|- r2j with r2j; - | - r2j
В таком долоте обеспечиваетс одинакова нагрузка, действующа на все опоры шарошек.In such a chisel, the same load is exerted on all supports of the cones.
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Application Number | Priority Date | Filing Date | Title |
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SU884433084A SU1691497A1 (en) | 1988-05-30 | 1988-05-30 | Tricone boring bit |
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SU884433084A SU1691497A1 (en) | 1988-05-30 | 1988-05-30 | Tricone boring bit |
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SU1691497A1 true SU1691497A1 (en) | 1991-11-15 |
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Cited By (19)
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US6873947B1 (en) | 2000-03-13 | 2005-03-29 | Smith International, Inc. | Method for simulating drilling of roller cone bits and its application to roller cone bit design and performance |
GB2417966A (en) * | 2004-08-16 | 2006-03-15 | Halliburton Energy Serv Inc | Roller cone drill bits with optimized bearing structure |
US7032689B2 (en) | 1996-03-25 | 2006-04-25 | Halliburton Energy Services, Inc. | Method and system for predicting performance of a drilling system of a given formation |
US7139689B2 (en) | 2000-10-11 | 2006-11-21 | Smith International, Inc. | Simulating the dynamic response of a drilling tool assembly and its application to drilling tool assembly design optimization and drilling performance optimization |
US7260514B2 (en) | 2000-03-13 | 2007-08-21 | Smith International, Inc. | Bending moment |
US7441612B2 (en) | 2005-01-24 | 2008-10-28 | Smith International, Inc. | PDC drill bit using optimized side rake angle |
US7693695B2 (en) | 2000-03-13 | 2010-04-06 | Smith International, Inc. | Methods for modeling, displaying, designing, and optimizing fixed cutter bits |
US7729895B2 (en) | 2005-08-08 | 2010-06-01 | Halliburton Energy Services, Inc. | Methods and systems for designing and/or selecting drilling equipment with desired drill bit steerability |
US7831419B2 (en) | 2005-01-24 | 2010-11-09 | Smith International, Inc. | PDC drill bit with cutter design optimized with dynamic centerline analysis having an angular separation in imbalance forces of 180 degrees for maximum time |
US7844426B2 (en) | 2003-07-09 | 2010-11-30 | Smith International, Inc. | Methods for designing fixed cutter bits and bits made using such methods |
US7860693B2 (en) | 2005-08-08 | 2010-12-28 | Halliburton Energy Services, Inc. | Methods and systems for designing and/or selecting drilling equipment using predictions of rotary drill bit walk |
US7899658B2 (en) | 2000-10-11 | 2011-03-01 | Smith International, Inc. | Method for evaluating and improving drilling operations |
US8145465B2 (en) | 2005-08-08 | 2012-03-27 | Halliburton Energy Services, Inc. | Methods and systems to predict rotary drill bit walk and to design rotary drill bits and other downhole tools |
US8145462B2 (en) | 2004-04-19 | 2012-03-27 | Halliburton Energy Services, Inc. | Field synthesis system and method for optimizing drilling operations |
US8274399B2 (en) | 2007-11-30 | 2012-09-25 | Halliburton Energy Services Inc. | Method and system for predicting performance of a drilling system having multiple cutting structures |
US8949098B2 (en) | 1996-03-25 | 2015-02-03 | Halliburton Energy Services, Inc. | Iterative drilling simulation process for enhanced economic decision making |
US9249654B2 (en) | 2008-10-03 | 2016-02-02 | Halliburton Energy Services, Inc. | Method and system for predicting performance of a drilling system |
US9482055B2 (en) | 2000-10-11 | 2016-11-01 | Smith International, Inc. | Methods for modeling, designing, and optimizing the performance of drilling tool assemblies |
US11016466B2 (en) | 2015-05-11 | 2021-05-25 | Schlumberger Technology Corporation | Method of designing and optimizing fixed cutter drill bits using dynamic cutter velocity, displacement, forces and work |
-
1988
- 1988-05-30 SU SU884433084A patent/SU1691497A1/en active
Non-Patent Citations (1)
Title |
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Авторское свидетельство СССР № 976008,кл. Е 21 В 10/16,1982. * |
Cited By (27)
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US7032689B2 (en) | 1996-03-25 | 2006-04-25 | Halliburton Energy Services, Inc. | Method and system for predicting performance of a drilling system of a given formation |
US8949098B2 (en) | 1996-03-25 | 2015-02-03 | Halliburton Energy Services, Inc. | Iterative drilling simulation process for enhanced economic decision making |
US7693695B2 (en) | 2000-03-13 | 2010-04-06 | Smith International, Inc. | Methods for modeling, displaying, designing, and optimizing fixed cutter bits |
US6873947B1 (en) | 2000-03-13 | 2005-03-29 | Smith International, Inc. | Method for simulating drilling of roller cone bits and its application to roller cone bit design and performance |
US7260514B2 (en) | 2000-03-13 | 2007-08-21 | Smith International, Inc. | Bending moment |
US7356450B2 (en) | 2000-03-13 | 2008-04-08 | Smith International, Inc. | Methods for designing roller cone bits by tensile and compressive stresses |
US7426459B2 (en) | 2000-03-13 | 2008-09-16 | Smith International, Inc. | Methods for designing single cone bits and bits made using the methods |
US7139689B2 (en) | 2000-10-11 | 2006-11-21 | Smith International, Inc. | Simulating the dynamic response of a drilling tool assembly and its application to drilling tool assembly design optimization and drilling performance optimization |
US9482055B2 (en) | 2000-10-11 | 2016-11-01 | Smith International, Inc. | Methods for modeling, designing, and optimizing the performance of drilling tool assemblies |
US7899658B2 (en) | 2000-10-11 | 2011-03-01 | Smith International, Inc. | Method for evaluating and improving drilling operations |
US7844426B2 (en) | 2003-07-09 | 2010-11-30 | Smith International, Inc. | Methods for designing fixed cutter bits and bits made using such methods |
US9493990B2 (en) | 2004-03-02 | 2016-11-15 | Halliburton Energy Services, Inc. | Roller cone drill bits with optimized bearing structures |
US8145462B2 (en) | 2004-04-19 | 2012-03-27 | Halliburton Energy Services, Inc. | Field synthesis system and method for optimizing drilling operations |
GB2417966A (en) * | 2004-08-16 | 2006-03-15 | Halliburton Energy Serv Inc | Roller cone drill bits with optimized bearing structure |
US7831419B2 (en) | 2005-01-24 | 2010-11-09 | Smith International, Inc. | PDC drill bit with cutter design optimized with dynamic centerline analysis having an angular separation in imbalance forces of 180 degrees for maximum time |
US7441612B2 (en) | 2005-01-24 | 2008-10-28 | Smith International, Inc. | PDC drill bit using optimized side rake angle |
US7860693B2 (en) | 2005-08-08 | 2010-12-28 | Halliburton Energy Services, Inc. | Methods and systems for designing and/or selecting drilling equipment using predictions of rotary drill bit walk |
US8145465B2 (en) | 2005-08-08 | 2012-03-27 | Halliburton Energy Services, Inc. | Methods and systems to predict rotary drill bit walk and to design rotary drill bits and other downhole tools |
US7827014B2 (en) | 2005-08-08 | 2010-11-02 | Halliburton Energy Services, Inc. | Methods and systems for design and/or selection of drilling equipment based on wellbore drilling simulations |
US8296115B2 (en) | 2005-08-08 | 2012-10-23 | Halliburton Energy Services, Inc. | Methods and systems for designing and/or selecting drilling equipment using predictions of rotary drill bit walk |
US8352221B2 (en) | 2005-08-08 | 2013-01-08 | Halliburton Energy Services, Inc. | Methods and systems for design and/or selection of drilling equipment based on wellbore drilling simulations |
US8606552B2 (en) | 2005-08-08 | 2013-12-10 | Halliburton Energy Services, Inc. | Methods and systems for designing and/or selecting drilling equipment using predictions of rotary drill bit walk |
US7778777B2 (en) | 2005-08-08 | 2010-08-17 | Halliburton Energy Services, Inc. | Methods and systems for designing and/or selecting drilling equipment using predictions of rotary drill bit walk |
US7729895B2 (en) | 2005-08-08 | 2010-06-01 | Halliburton Energy Services, Inc. | Methods and systems for designing and/or selecting drilling equipment with desired drill bit steerability |
US8274399B2 (en) | 2007-11-30 | 2012-09-25 | Halliburton Energy Services Inc. | Method and system for predicting performance of a drilling system having multiple cutting structures |
US9249654B2 (en) | 2008-10-03 | 2016-02-02 | Halliburton Energy Services, Inc. | Method and system for predicting performance of a drilling system |
US11016466B2 (en) | 2015-05-11 | 2021-05-25 | Schlumberger Technology Corporation | Method of designing and optimizing fixed cutter drill bits using dynamic cutter velocity, displacement, forces and work |
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